Trying to concieve

Ok so I haven't had a period in almost 9 months well I finally had one the beginning of April.. the doctors still put me on 10 day provera it's been 7 days since I have been off of it and today I went and wiped after peeing and I seen some brown spotting... so in figured I was going to start my period so I put in a tampon... went to change it two hours later and there was nothing on it at all... I've been very sick to my stomach all day with a bad headache... anyone ever have experience with provera